Find the reciprocal or multiplication inverse-7

1/7 of -1/7

Step-by-step explanation:

The multiplicative inverse of a number can be expressed as a fraction. A number multiplied by its multiplicative inverse is one.

when you multiply 1/7 and 7 you get one

same for -7 and 1/-7

the product should equal 1

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arithmetic sequence: a sequnce in which the diffrence between any two consecutive terms is the same

step-by-step explanation:

x= -3 and

step-by-step explanation:

to find the roots of a cubic, use division or factoring to find the factors then set equal to 0. as this is a difference of cubes, it factors into

where a is the cube root of .

here   this is 27 and the cube root of 27 is 3. so we write using the form:

.

set each factor to 0 and solve for x.

x-3=0

x=3

the quadratic expression does not factor and must be solved using the quadratic formula.

where a = 1, b=3, and c=9

this cubic has two complex roots.